Dispersal of Disks Around Young Stars: Constraints on Kuiper Belt Formation

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

14

Scientific paper

Photoevaporation is expected to be the dominant dispersal mechanism for the outer regions of dusty disks around young stars. The gaseous disk surface is often heated by ultraviolet photons from either the central star or a luminous nearby massive star in the star-forming cluster; the heated gas evaporates to interstellar space and drags along small dust particles. In this paper, we focus on photoevaporation driven by nearby massive stars and study whether photoevaporation can remove the outer disk material before the dust coagulates into large particles (with size a ≥ 0.1 - 1 cm), large enough to resist entrainment in the evaporating gas and remain in orbit to form Kuiper Belt objects. If the dust is carried off with the evaporating gas, the formation of Kuiper Belt objects is suppressed and the production of debris dust particles is also suppressed. We find that dust coagulation occurs rapidly enough that Kuiper Belt formation is likely to take place inside about 50 -- 100 AU, even around low mass stars in dense clusters like the Trapezium. However, photoevaporation will cause a sharp cutoff in the formation of low eccentricity Kuiper Belt objects beyond this radius for Trapezium-like conditions. Different initial cluster environments can result in quite different amounts and extents of debris dust around stars of similar age and mass.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Dispersal of Disks Around Young Stars: Constraints on Kuiper Belt Formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dispersal of Disks Around Young Stars: Constraints on Kuiper Belt Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dispersal of Disks Around Young Stars: Constraints on Kuiper Belt Formation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1022678

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.